Import libffi master

README.md

@@ -51,6 +51,7 @@ tested:
 | --------------- | ---------------- | ----------------------- |
 | AArch64 (ARM64) | iOS              | Clang                   |
 | AArch64         | Linux            | GCC                     |
+| AArch64         | Windows          | MSVC                    |
 | Alpha           | Linux            | GCC                     |
 | Alpha           | Tru64            | GCC                     |
 | ARC             | Linux            | GCC                     |
@@ -169,6 +170,11 @@ remove the line in configure that sets 'fix_srcfile_path' to a 'cygpath'
 command.  ('cygpath' is not present in MingW, and is not required when
 using MingW-style paths.)
 
+To build static library for ARM64 with MSVC using visual studio solution, msvc_build folder have
+   aarch64/Ffi_staticLib.sln
+   required header files in aarch64/aarch64_include/
+
+
 SPARC Solaris builds require the use of the GNU assembler and linker.
 Point ``AS`` and ``LD`` environment variables at those tool prior to
 configuration.
@@ -191,14 +197,13 @@ History
 
 See the git log for details at http://github.com/libffi/libffi.
 
-    3.4 TBD
+    3.3 TBD
         Add RISC-V support.
         New API in support of GO closures.
         Default to Microsoft's 64 bit long double ABI with Visual C++.
-          GNU compiler uses 80 bits (128 in memory) FFI_GNUW64 ABI.
-	Many new tests cases and bug fixes.
-    
-    3.3 Mar-05-19
+        GNU compiler uses 80 bits (128 in memory) FFI_GNUW64 ABI.
+        Many new tests cases and bug fixes.
+        Add windows on arm64 (WOA) support.
         Add Windows 32-bit arm support.
         
     3.2.1 Nov-12-14